The correct name for this decoder is the "QSI Revolution", but there was a lot of confused marketing, where people saw the board packaged with a screw terminal board, and the board or board and decoder marketed as the "Magnum".

In any case there is only one version of the hardware, although there were some modifications to cut off certain pins that caused trouble in some implementations. Too many people not following the "Aristo socket" standard.

Wiring Diagrams and pictures:

Here's a diagram of the board with connections. NOTE! The connections on the "magnum" board are WRONG. Read the silkscreened letters by the screw terminals. The headlight (FL) and the backup light (RL) are reversed from the picture below.

Note: all the connectors are different.

P9 - 2 pin speaker connector - can get spares from All Electronics, part SBC-1

P2 - 3 pin chuff switch connector - only pins 1 & 2 are used. (I have a lot of spares, always order the steam version, then you get one of these cables with each decoder

P5 - 5 pin flat cable, comes with the Airwire receiver

P3 - you can't use this, so never looked into it

P1 - small 2 pin connector for the reed switch - you get a reed switch with every decoder, I never use them

The Revolution took Q2 sound files, and not to be confused with the Titan version Q2 files. (Q3 files are exclusively ET - Emulator Technology).